Enhanaced Propionic Acid Production by Mixed Culture of Propionibacterium acidipropioniai and Saccharomyces cerevisiae

Yin Liu; Jing Liang He; Ji Hong Zhao; Ming Bao Wei; Xue Peng Yang; Shu Juan Zheng

doi:10.4028/www.scientific.net/AMR.550-553.1424

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 550-553Enhanaced Propionic Acid Production by Mixed...

Enhanaced Propionic Acid Production by Mixed Culture of Propionibacterium acidipropioniai and Saccharomyces cerevisiae

Abstract:

In a batch mixed culture of Propionibacterium acidipropioniai and Saccharomyces cerevisiae, which could exploit synergistic effects, cell growth and propionic acid production rates of P. acidipropioniai significantly increased, compared with those in pure cultures. Compared with a pure culture, the mixed culture had a significant improvement on the maximal propionic acid (12.1 g/l vs. 10.1 g/l) and glycerol conversion efficiency (60.5% vs. 50.5%). Propionic acid production was further enhanced by an addition of glycerol solution in the fed-batch mixed culture; and the maximal propionic acid yield and glycerol conversion efficiency reached 27.9 g/l and 56.7%, respectively. These results showed that a mixed culture of P. acidipropionici and S. cerevisiae could serve as an excellent alternative to conventional propionic acid fermentation.

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Advanced Materials Research (Volumes 550-553)

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1424-1428

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https://doi.org/10.4028/www.scientific.net/AMR.550-553.1424

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Online since:

July 2012

Authors:

Yin Liu, Jing Liang He, Ji Hong Zhao, Ming Bao Wei, Xue Peng Yang, Shu Juan Zheng

Keywords:

Mixed Culture, Propionibacterium acidipropioniai, Propionic Acid, Saccharomyces cerevisiae

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